gebrd: reduction to bidiagonal

Functions
subroutine	cgebrd (m, n, a, lda, d, e, tauq, taup, work, lwork, info)
	CGEBRD
subroutine	dgebrd (m, n, a, lda, d, e, tauq, taup, work, lwork, info)
	DGEBRD
subroutine	sgebrd (m, n, a, lda, d, e, tauq, taup, work, lwork, info)
	SGEBRD
subroutine	zgebrd (m, n, a, lda, d, e, tauq, taup, work, lwork, info)
	ZGEBRD

Detailed Description